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‎Week3/A-Loops/AllPrimeNumbers.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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/* Your class should be named Solution.
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* Read input as specified in the question.
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* Print output as specified in the question.
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*/
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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for(int i=2;i<=n;i++)
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{
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boolean isPrime=true;
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for(int j=2;j<i;j++)
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{
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if(i%j==0)
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{
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isPrime=false;
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break;
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}
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}
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if(isPrime)
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{
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System.out.println(i);
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}
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}
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}
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}

‎Week3/A-Loops/Assignments3a/BinaryToDecimal.txt

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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc=new Scanner(System.in);
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int n=sc.nextInt();
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int ref=-1;
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int num=0;
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while(n>0)
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{
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ref+=1;
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int r=n%10;
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num=num+((int)Math.pow(2,ref)) * r;
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n/=10;
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}
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System.out.println(num);
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}
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}

‎Week3/A-Loops/Assignments3a/Factors.txt

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import java.util.Scanner;
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public class Solution {
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public static void printFac(int n)
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{
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for(int i=2;i<n;i++)
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{
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if(n%i==0)
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{
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System.out.print(i+" ");
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}
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}
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}
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public static boolean isPrime(int n)
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{
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boolean b=true;
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for(int i=2;i<n;i++)
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{
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if(n%i==0)
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{
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return false;
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}
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}
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return true;
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}
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public static void main(String[] args) {
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// Write your code here
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Scanner sc=new Scanner(System.in);
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int n=sc.nextInt();
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boolean res=isPrime(n);
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if(res)
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{
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System.out.println("-1");
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}
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else{
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printFac(n);
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}
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}
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}

‎Week3/A-Loops/Assignments3a/FahrenheitToCelsius.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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/* Your class should be named Solution.
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* Read input as specified in the question.
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* Print output as specified in the question.
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*/
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Scanner sc=new Scanner(System.in);
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int start=sc.nextInt();
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int end=sc.nextInt();
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int step=sc.nextInt();
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for(int i=start;i<=end;i+=step)
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{
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int f=(int)( (i-32) * 5.0/9.0);
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System.out.println(i+" "+f);
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}
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}
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}

‎Week3/A-Loops/Assignments3a/FindPowerOfaNumber.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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int p=sc.nextInt();
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int res=(int)Math.pow(n,p);
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System.out.println(res);
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}
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}

‎Week3/A-Loops/Assignments3a/SumorProduct.txt

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import java.util.Scanner;
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public class Main {
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public static void sum(int n)
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{
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System.out.println((n * (n+1))/2);
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return;
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}
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public static void prod(int n)
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{
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int p=1;
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for(int i=1;i<=n;i++)
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{
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p*=i;
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}
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System.out.println(p);
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return;
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}
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public static void main(String[] args)
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{
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// Write your code here
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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int c=sc.nextInt();
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switch(c)
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{
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case 1: sum(n);break;
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case 2: prod(n);break;
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default:System.out.println("-1"); break;
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}
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}
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}

‎Week3/A-Loops/Assignments3a/TermsOfAP.txt

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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc= new Scanner(System.in);
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int n=sc.nextInt();
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int i=5;
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for(int j=1;j<=n;)
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{
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if(i%4!=0)
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{
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System.out.print(i+" ");
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j++;
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}
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i+=3;
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}
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}
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}

‎Week3/A-Loops/MultiplicationTable.txt

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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc=new Scanner(System.in);
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int a=sc.nextInt();
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for(int i=1;i<=10;i++)
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{
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System.out.println(a*i);
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}
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}
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}

‎Week3/A-Loops/ReverseOfaNumber.txt

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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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int sum=0;
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for(;n!=0;n/=10)
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{
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sum=sum*10 + n%10;
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}
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System.out.println(sum);
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}
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}

‎Week3/A-Loops/SquareRootIntegral.txt

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import java.util.Scanner;
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public class Main {
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public static void main(String[] args) {
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// Write your code here
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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int res=(int)Math.sqrt(n);
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System.out.println(res);
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}
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}

‎Week3/A-Loops/SumofEvenNumbers.txt

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/*
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Pre-requisite to solve this problem:
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In this question, we have to find sum of all even numbers till n. To take sum of all the even numbers, we have to take a variable and initialize it to zero. Let us name this variable as sum.
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Following code is used to add 2 to sum variable and update it to the same sum variable:
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sum = sum + 2
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Hint to solve this problem: We will have to loop on even numbers only and add the even numbers to the same sum variable, described above.
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*/
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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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/* Your class should be named Solution.
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* Read input as specified in the question.
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* Print output as specified in the question.
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*/
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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System.out.println((n/2) * ((n/2) + 1));
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}
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}

‎Week3/A-Loops/SumofnNumbers.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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/* Your class should be named Solution.
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* Read input as specified in the question.
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* Print output as specified in the question.
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*/
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Scanner sc= new Scanner(System.in);
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int a=sc.nextInt();
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System.out.println(( (a)*(a+1) )/2);
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}
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}

‎Week3/B-Patterns-I/Assignments3b/DownwardTriangleStarPattern.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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// write the logic here !!
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Scanner sc=new Scanner(System.in);
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byte b=sc.nextByte();
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for(byte i=0;i<b;i++)
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{
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for(byte j=0;j<=i-1;j++)
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{
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System.out.print(' ');
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}
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for(byte j=b;j>i;j--)
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{
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System.out.print('*');
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}
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System.out.println();
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}
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}
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}

‎Week3/B-Patterns-I/Assignments3b/HollowNumberSquarePattern.txt

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import java.util.Scanner;
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public class Solution {
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public static void Print1(int n)
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{
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for(int i=1;i<=n;i++)
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{
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System.out.print(i);
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}
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}
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public static void Print2(int n)
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{
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int a=1,b=2;
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System.out.print(a);
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for(int i=2;i<n;i++)
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{
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System.out.print(' ');
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}
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System.out.print(b);
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}
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public static void main(String[] args)
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{
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// write your code here !!
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Scanner sc = new Scanner(System.in);
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int n=sc.nextInt();
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for(int i=1;i<=n;i++)
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{
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if(i==1 || i==n)
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{
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Print1(n);
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System.out.println();
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}
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else{
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Print2(n);
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System.out.println();
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}
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}
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}
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}

‎Week3/B-Patterns-I/Assignments3b/ReverseNumberPattern.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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/* Your class should be named Solution.
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* Read input as specified in the question.
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* Print output as specified in the question.
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*/
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Scanner sc=new Scanner(System.in);
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byte b=sc.nextByte();
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for(byte i=1;i<=b;i++)
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{
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for(byte j=1;j<=i;j++)
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{
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System.out.print(i-j+1);
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}
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System.out.println();
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}
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}
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}

‎Week3/B-Patterns-I/Assignments3b/ReversePyramidStarPattern.txt

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import java.util.Scanner;
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public class Solution {
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public static void main(String[] args) {
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// write the logic here !!
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Scanner sc=new Scanner(System.in);
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byte b=sc.nextByte();
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for(byte i=1;i<=b;i++)
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{
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for(byte j=1;j<=i-1;j++)
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{
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System.out.print(' ');
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}
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for(byte j=b;j>=i;j--)
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{
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System.out.print("* ");
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}
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System.out.println();
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}
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}
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}

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